Description
In the Linux kernel, the following vulnerability has been resolved: unicode: Fix utf8_load() error path utf8_load() requests the symbol "utf8_data_table" and then checks if the requested UTF-8 version is supported. If it's unsupported, it tries to put the data table using symbol_put(). If an unsupported version is requested, symbol_put() fails like this: kernel BUG at kernel/module/main.c:786! RIP: 0010:__symbol_put+0x93/0xb0 Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? die+0x2e/0x50 ? do_trap+0xca/0x110 ? do_error_trap+0x65/0x80 ? __symbol_put+0x93/0xb0 ? exc_invalid_op+0x51/0x70 ? __symbol_put+0x93/0xb0 ? asm_exc_invalid_op+0x1a/0x20 ? __pfx_cmp_name+0x10/0x10 ? __symbol_put+0x93/0xb0 ? __symbol_put+0x62/0xb0 utf8_load+0xf8/0x150 That happens because symbol_put() expects the unique string that identify the symbol, instead of a pointer to the loaded symbol. Fix that by using such string.
Product status
2b3d047870120bcd46d7cc257d19ff49328fd585 (git) before 4387cef540f36c2c9297460758cc2438305a24a0
2b3d047870120bcd46d7cc257d19ff49328fd585 (git) before c4b6c1781f6cc4e2283120ac8d873864b8056f21
2b3d047870120bcd46d7cc257d19ff49328fd585 (git) before 6504dd27123966dc455494cb55217c04ca479121
2b3d047870120bcd46d7cc257d19ff49328fd585 (git) before 89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3
2b3d047870120bcd46d7cc257d19ff49328fd585 (git) before 156bb2c569cd869583c593d27a5bd69e7b2a4264
5.17
Any version before 5.17
6.1.120 (semver)
6.6.64 (semver)
6.11.11 (semver)
6.12.2 (semver)
6.13 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/03/msg00001.html
git.kernel.org/...c/4387cef540f36c2c9297460758cc2438305a24a0
git.kernel.org/...c/c4b6c1781f6cc4e2283120ac8d873864b8056f21
git.kernel.org/...c/6504dd27123966dc455494cb55217c04ca479121
git.kernel.org/...c/89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3
git.kernel.org/...c/156bb2c569cd869583c593d27a5bd69e7b2a4264